Repair with modeling glue instead of throwing away

Mit Sugru lassen sich viele Dinge reparieren, die sonst im Müll landen würden. Eine preiswertere Alternative zu diesem Knetkleber kannst du einfach selber machen.

Instead of throwing away broken cables or shoes with holes, you can often repair them – for example with modeling glue Sugru or homemade repair clay. The silicone mass can be shaped as you like and is as elastic as rubber after it has hardened, making it perfect for repairing moving objects.

Sugru: Repair with the Dodge Glue

Flexible materials wear out or become brittle over time. However, they are difficult to repair with conventional (homemade) glue, as the hardened glue becomes rigid and immobile. Silicone putty glue like Sugru, on the other hand, remains flexible so the items can be used as before. The repair putty is also waterproof, particularly resistant to heat and cold (-40 to +180 °C), UV-resistant and electrically insulating at low currents and below 24 volts.

Make your own Sugru alternative

If you want to spend less money on the repair putty, you can simply make it yourself with inexpensive sanitary silicone.

Materials needed for a minor repair:

  • 1 tsp sanitary silicone (preferably a leftover from the last renovation)
  • 2 tsp cornstarch
  • optionally a dab of paint, e.g. wall paint, acrylic paint or even food coloring, for color-matching or contrasting-colored repair compound

Larger or smaller amounts are also best mixed in a ratio of 1:2.

The amount of starch can be varied as required: a slightly softer mass with less thickness can be produced for fine cracks, a zipper handle may need even more thickness to be dimensionally stable.

Tip: If you buy the silicone mass separately in the hardware store, you can also use silicone that is colored to match.

Needed time: 2 minutes.

This is how the kneading glue is made:

  1. Mix silicone and starch

    Mix the silicone and starch on a plate or other smooth surface. (Residue of the putty can simply be rubbed off smooth surfaces after hardening.) It is best to either use gloves for this or first stir the ingredients with a spoon or spatula until an even mass has formed that can be kneaded with your hands.Sugru can fix a lot of things that would otherwise end up in the trash.  You can easily make a cheaper alternative to this kneading glue yourself.

  2. Optionally mix in color

    If desired, knead in approx. 2-3 drops of color until the mass is colored evenly.Sugru can fix a lot of things that would otherwise end up in the trash.  You can easily make a cheaper alternative to this kneading glue yourself.

Your kneading glue is now ready for use. Depending on the silicone used, the mass can be worked on for about 30 minutes before it begins to harden.

Use Sugru and Alternative

For a repair, it is advisable to thoroughly clean and dry the bonding area beforehand so that the silicone mass adheres well. Press the playdough firmly or press and smooth into a hole or crack, then shape the surface as desired.

If you want to get a particularly even surface, either powder the putty with more starch when smoothing it out or moisten your fingers with a little soapy water.

Tip: To repair a headphone or charging cable whose current-carrying wires are already exposed, you can first isolate them from each other with a thin layer of modeling clay.

Other things that can be repaired or strengthened with Sugru or other modeling glue are, for example, scissor and knife handles, shower shelves or dishwasher baskets with defective plastic coating, broken refrigerator compartments and drawers, defective zipper pullers, shoe soles or handles on light objects.

Sugru can fix a lot of things that would otherwise end up in the trash.  You can easily make a cheaper alternative to this kneading glue yourself.

The manufacturer has many other creative suggestions for using Sugru – not just for repairs, but also to supplement and optimize a wide variety of objects and various DIY projects.

After the repair has been completed, the mass must harden. Depending on the silicone used, this takes about a day.

A notice: Although silicone is considered very safe and harmless to health, it is one of the plastics that are difficult to biodegrade and it is best not to use them at all. However, repairing existing items with silicone putty is far more environmentally friendly than throwing them away and buying new ones.

You can find more tips on how to make the world a little more sustainable in our books:

What would you like to fix with plasticine instead of throwing it away? We’d love to hear more ideas in the comments!

These posts are also about repairing and reusing:

Sugru can fix a lot of things that would otherwise end up in the trash.  You can easily make a cheaper alternative to this kneading glue yourself.

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